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EDF : Quality control deviations on fuel assembly rods: no operating impact on the French nuclear fleet

PRESS RELEASE21 September 2017

Quality control deviations on fuel assembly rods: no operating impact on the French nuclear fleet

Areva notified the EDF Group of quality control deviations on certain rods used to manufacture fuel assemblies. The supplier is not able to demonstrate that quality control substantiating leaktightness of these rods has been properly performed.

14 out of the 2,600,000 rods installed at the French nuclear fleet are concerned by this quality control deviation:- 3 rods are currently in use in the Golfech 2, Flamanville 1 and Cattenom 3 reactors- 11 rods are not installed in the reactors

Within the framework of nuclear power plant operating procedures, the primary system chemical properties are monitored on a continuous basis so that the slightest anomaly can be detected on the fuel assembly tubes. EDF transmits all these measurement results to the Nuclear Safety Authority.The measurements currently performed on the Golfech 2, Flamanville 1 and Cattenom 3 reactors do not require any specific measures for reactor operation in completely safe conditions.

This press release has been certified. Check its authenticity at medias.edf.com

A key player in energy transition, the EDF Group is an integrated electricity company, active in all areas of the business: generation, transmission, distribution, energy supply and trading, energy services. A global leader in low-carbon energies, the Group has developed a diversified generation mix based on nuclear power, hydropower, new renewable energies and thermal energy. The Group is involved in supplying energy and services to approximately 37.1 million customers, of which 26.2 million in France. The Group generated consolidated sales of €71 billion in 2016. EDF is listed on the Paris Stock Exchange.

EDF : Quality control deviations on fuel assembly rods: no operating impact on the French nuclear fleet

PRESS RELEASE21 September 2017

Quality control deviations on fuel assembly rods: no operating impact on the French nuclear fleet

Areva notified the EDF Group of quality control deviations on certain rods used to manufacture fuel assemblies. The supplier is not able to demonstrate that quality control substantiating leaktightness of these rods has been properly performed.

14 out of the 2,600,000 rods installed at the French nuclear fleet are concerned by this quality control deviation:- 3 rods are currently in use in the Golfech 2, Flamanville 1 and Cattenom 3 reactors- 11 rods are not installed in the reactors

Within the framework of nuclear power plant operating procedures, the primary system chemical properties are monitored on a continuous basis so that the slightest anomaly can be detected on the fuel assembly tubes. EDF transmits all these measurement results to the Nuclear Safety Authority.The measurements currently performed on the Golfech 2, Flamanville 1 and Cattenom 3 reactors do not require any specific measures for reactor operation in completely safe conditions.

This press release has been certified. Check its authenticity at medias.edf.com

A key player in energy transition, the EDF Group is an integrated electricity company, active in all areas of the business: generation, transmission, distribution, energy supply and trading, energy services. A global leader in low-carbon energies, the Group has developed a diversified generation mix based on nuclear power, hydropower, new renewable energies and thermal energy. The Group is involved in supplying energy and services to approximately 37.1 million customers, of which 26.2 million in France. The Group generated consolidated sales of €71 billion in 2016. EDF is listed on the Paris Stock Exchange.